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We present calculations of nuclear-spin-dependent and nuclear-spin-independent parity violating amplitudes in Ba, Ra, Ac+, Th and Pa. Parity nonconservation in these systems is greatly enhanced due to the presence of very close electronic…

原子物理 · 物理学 2014-04-23 B. M. Roberts , V. A. Dzuba , V. V. Flambaum

We reconsider the derivation of the nucleon-nucleon parity-violating (PV) potential within a chiral effective field theory framework. We construct the potential up to next-to-next-to-leading order by including one-pion-exchange,…

核理论 · 物理学 2015-06-19 M. Viviani , A. Baroni , L. Girlanda , A. Kievsky , L. E. Marcucci , R. Schiavilla

Nuclear spin-dependent parity violation (NSD-PV) effects in atoms and molecules arise from $Z^0$ boson exchange between electrons and the nucleus, and from the magnetic interaction between electrons and the parity-violating nuclear anapole…

原子物理 · 物理学 2018-04-06 Emine Altuntas , Jeffrey Ammon , Sidney B. Cahn , David DeMille

The recent experimental determination of the parity violating asymmetry $A_{\rm pv}$ in ${}^{48}$Ca and ${}^{208}$Pb at Jefferson Lab is important for our understanding on how neutrons and protons arrange themselves inside the atomic…

核理论 · 物理学 2023-01-03 Paul-Gerhard Reinhard , Xavier Roca-Maza , Witold Nazarewicz

We present a detailed analysis together with exact numerical calculations on one-loop contributions to neutron electric dipole moment from supersymmetry without R-parity, focusing on the gluino, chargino, and neutralino contributions. Apart…

高能物理 - 唯象学 · 物理学 2009-11-07 Y. -Y. Keum , Otto C. W. Kong

We have calculated the 6s-7s parity nonconserving E1 transition amplitude (E_{PNC}) in cesium. This calculation has been performed with higher numerical accuracy than our 1989 calculation [V.A. Dzuba, V.V. Flambaum, and O.P. Sushkov, Phys.…

高能物理 - 唯象学 · 物理学 2007-05-23 V. A. Dzuba , V. V. Flambaum , J. S. M. Ginges

Motivated by recent measurements for several alkali-metal atoms and alkali-metal-like ions, we perform a detailed study of electric dipole (E1) transition amplitudes in K, Ca+, Rb, Sr+, Cs, Ba+, Fr, and Ra+, which are of interest for…

原子物理 · 物理学 2023-06-01 B. M. Roberts , C. J. Fairhall , J. S. M. Ginges

Nuclear-spin-dependent (NSD) parity violating (PV) effects can be strongly enhanced in diatomic molecules containing heavy atoms. Future measurements are anticipated to provide nuclear anapole moments and strength constants for PV nuclear…

原子物理 · 物理学 2012-11-20 A. Borschevsky , M. Iliaš , V. A. Dzuba , K. Beloy , V. V. Flambaum , P. A. Schwerdtfeger

Parity-violating electron-scattering provides a largely model independent way of measuring neutron densities in nuclei that has important implications for the structure of nuclei and neutron stars. In this paper we calculate radiative…

核理论 · 物理学 2026-03-25 Brendan T. Reed , C. J. Horowitz

We discuss results of the most accurate to-date test of the low-energy electroweak sector of the standard model of elementary particles. Combining previous measurements with our high-precision calculations we extracted the weak charge of…

高能物理 - 唯象学 · 物理学 2014-11-21 S. G. Porsev , K. Beloy , A. Derevianko

We consider hydrogen-like atoms in unstable levels of principal quantum number n=2, confined to a finite size region in a non-homogeneous electric field carrying handedness. The interplay between the internal degrees of freedom of the atoms…

高能物理 - 唯象学 · 物理学 2009-10-30 D. Bruss , T. Gasenzer , O. Nachtmann

We employ the $Z$-vector method in the four-component relativistic coupled-cluster framework to calculate the parity (${\mathcal{P}}$) and time-reversal (${\mathcal{T}}$) symmetry violating scalar-pseudoscalar (S-PS) nucleus-electron…

原子物理 · 物理学 2019-03-27 Kaushik Talukdar , Malaya K. Nayak , Nayana Vaval , Sourav Pal

The parity-violating asymmetry, including leading-order QED corrections to the Coulomb potential, is calculated non-perturbatively by solving the Dirac equation. At GeV collision energies and forward scattering angles, QED effects enhance…

核理论 · 物理学 2025-05-14 Xavier Roca-Maza , D H. Jakubassa-Amundsen

The atomic parity non-conservation(PNC) experiments has reached accuracies which have important implications for physics beyond the standard model. An optical rotation experiment to measure the atomic PNC of the 3P1(6s6p)--1P1(6s6p) in Yb…

原子物理 · 物理学 2007-05-23 Angom Dilip Singh , Bhanu Pratap Das

We calculate parity-violation-induced E1 amplitudes for the $1s\rightarrow 2s$ and $1s^2 2s\rightarrow 1s^2 3s$ transitions in H- and Li-like ions of $^{40}$Ca, $^{48}$Ca, and $^{208}$Pb. In our analysis, we account for neutron skin effects…

原子物理 · 物理学 2026-02-24 A. V. Viatkina , Ch. G. Mertens , B. Ohayon , V. A. Yerokhin , A. Surzhykov

We report theoretical results of the electric dipole moment (EDM) of $^{210}$Fr which arises from the interaction of the EDM of an electron with the internal electric field in an atom and the scalar-pseudoscalar electron-nucleus…

高能物理 - 唯象学 · 物理学 2021-02-23 Nanako Shitara , Nodoka Yamanaka , Bijaya Kumar Sahoo , Toshio Watanabe , Bhanu Pratap Das

New sources of charge-parity (CP) violation, beyond the known sources in the standard model (SM), are required to explain the baryon asymmetry of the universe. Measurement of a non-zero permanent electric dipole moment (EDM) in fundamental…

核实验 · 物理学 2024-04-10 Prajwal MohanMurthy , Umesh Silwal , Jeff A. Winger

We explore two longitudinal single-spin asymmetries induced from parity violation in neutral-current deep inelastic scattering at the proposed Electron-ion collider in China (EicC): $A_{PV}^{e\,(p)}$ from longitudinally polarized…

高能物理 - 唯象学 · 物理学 2025-03-13 Yong Du

We have calculated the 6s-7s parity nonconserving (PNC) E1 transition amplitude, E_{PNC}, in cesium. We have used an improved all-order technique in the calculation of the correlations and have included all significant contributions to…

高能物理 - 唯象学 · 物理学 2009-08-18 V. A. Dzuba , V. V. Flambaum , J. S. M. Ginges

The self-energy and vertex QED radiative corrections to the parity nonconservation (PNC) amplitude in atoms are obtained using the perturbation theory in powers of (alpha Z). The calculated linear in (alpha Z) term gives -0.6 % for the PNC…

高能物理 - 唯象学 · 物理学 2009-11-07 M. Yu. Kuchiev